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pandas read_csv and filter columns with usecols
...pandas as pd
from StringIO import StringIO
csv = r"""dummy,date,loc,x
bar,20090101,a,1
bar,20090102,a,3
bar,20090103,a,5
bar,20090101,b,1
bar,20090102,b,3
bar,20090103,b,5"""
df = pd.read_csv(StringIO(csv),
header=0,
index_col=["date", "loc"],
usecols=["date", "loc", "x"],...
Process all arguments except the first one (in a bash script)
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692
Use this:
echo "${@:2}"
The following syntax:
echo "${*:2}"
would work as well, but is n...
converting drawable resource image into bitmap
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answered Jan 3 '12 at 19:14
poitroaepoitroae
19.8k88 gold badges5555 silver badges7575 bronze badges
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Sharing src/test classes between modules in a multi-module maven project
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2 Answers
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What's the difference between --general-numeric-sort and --numeric-sort options in gnu sort
... sort compares the numbers as floats, this allows scientific notation eg 1.234E10 but is slower and subject to rounding error (1.2345678 could come after 1.2345679), numeric sort is just a regular alphabetic sort that knows 10 comes after 9.
See http://www.gnu.org/software/coreutils/manual/htm...
ActiveRecord, has_many :through, and Polymorphic Associations
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162
There is a known issue with Rails 3.1.1 that breaks this functionality. If you are having this p...
How do you set the text in an NSTextField?
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231
setStringValue: is the way to do it. You should make sure your outlet is being set properly. ...
Chrome browser reload options new feature
...ons" and when I do it I get these three awesome options.
1. Normal Reload
2. Hard Reload
3. Empty Cache and Hard Reload (this is very useful option I believe)
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Setting the Vim background colors
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answered Jul 13 '09 at 2:41
Alex MartelliAlex Martelli
724k148148 gold badges11261126 silver badges13241324 bronze badges
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How to immediately see compile errors in project tree of IntelliJ Idea?
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As of IntelliJ 12 there's an option to automatically build your project upon source changes. In "Settings" --> Build, Execution, Deployment --> "Compiler" check the checkbox "Build project automatically". This will immediately show any...